Stereoregulation of the C(12b)H-C(2)H relationship in the preparation of 2-substituted 1,2,3,4,6,7,12,12b-octahydro-indolo[2,3-]quinolizines
作者:Mauri Lounasmaa★、Reija Jokela
DOI:10.1016/s0040-4020(01)89256-5
日期:1989.1
Stereochemical control in the preparation of 2-substituted1,2,3,4,6,7,12,12b-octahydroindolo[2,3-]quinolizinespossessing at will the C(12b)H-C(2)H cis or trans configuration was achieved by catalytic reduction of the 2,3-dehydro analoques,which were either unsubstituted on the indole nitrogen orsubstituted with a BOC-group, respectively. The contribution ofdifferent conformations to the conformational
立体化学控制制备2-取代的1,2,3,4,6,7,12,12b-八氢吲哚[2,3- ]喹啉具有随意的C(12b)HC(2)H顺式或反式构型通过催化还原2,3-脱氢类似物,它们分别在吲哚氮上未被取代或被BOC-基团取代。通过13 C NMR光谱分析估计不同构象对所制备化合物的构象平衡的贡献。
Identification of Pyridinium with Three Indole Moieties as an Antimicrobial Agent
A novel pyridinium with three indole moieties, tricepyridinium, was obtained from the culture of an Escherichia coli clone incorporating metagenomic libraries from the marine spongeDiscodermia calyx. For the important structural elements of tricepyridinium to be investigated for antibacterial activity, tricepyridinium and its analogues were chemically synthesized. Tricepyridinium had antimicrobial
[EN] POLYCYCLIC COMPOUNDS AS POTENT ALPHA2-ADRENOCEPTOR ANTAGONISTS<br/>[FR] COMPOSES POLYCYCLIQUES COMME ANTAGONISTES PUISSANTS DES RECEPTEURS DOLLAR G(A)2-ADRENERGIQUES
申请人:ORION CORP
公开号:WO2003082866A1
公开(公告)日:2003-10-09
The invention provides a compound of formula I, wherein X, Z, R1 to R10, R15, R16, m, n, r and t are as defined in claim 1, or a pharmaceutically acceptable salt or ester thereof, useful as an alpha-2 antagonist. The compounds of formula I can be used for the treatment of diseases or conditions where antagonists of alpha-2 adrenoceptors are indicated to be effective.
For the first time, it has been shown that 2,6-dicyanopiperidines are formed in the Fry reaction via 1,4-dihydropyridine intermediates. A new synthetic approach for building 2,6-dicyanopiperidine derivatives by an extension of the sodium dithionite reduction of pyridinium salts is described. The stereochemistry of 2,6-dicyanopiperidine derivatives formed is discussed.